Which of the following statement is correct?
a. H2S is the hydrogen donor for purple and green sulphur bacteria
b. H2O is the hydrogen donor for purple and green sulphur bacteria
c. Oxygen is evolved by the purple and green sulphur bacteria
d. Oxygen evolved by the green plants comes from the CO2.

Subtopic:  Historical View: Experiments |
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The mechanism of ATP synthesis is explained by
a. Chemiosmotic Hypothesis
b. Photophosphorylation
c. Electron Transport Chain
d. Splitting of Water

Subtopic:  Light Reactions :3 | Light Reactions |
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ATP synthesis is linked to-
a. Development of electron gradient
b. Development of atomic gradient
c. Development of proton gradient
d. Flow of electrons across the membrane

Subtopic:  Light Reactions :3 | Light Reactions |
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The difference in development of proton gradient in photosynthesis and respiration is-
a. Photosynthesis has thylakoid membrane across which proton gradient is generated
b. Proton accumulation is inside the membrane of thylakoid.
c. both a and b
d. Mitochondrial membrane is involved

Subtopic:  Light Reactions :3 | Light Reactions |
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What does not cause the proton gradient across the membrane?
a. Splitting of water
b. Moving electrons through photosystems
c. Reduction of NADP
d. Q cycle

Subtopic:  Light Reactions :3 | Light Reactions |
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Where does the splitting of water take place?
a. Stroma
b. Cytoplasm
c. Thylakoid lumen
d. Plasma membrane

Subtopic:  Light Reactions :3 | Light Reactions |
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The---------- acceptor of -------- which is located------- side of membrane transfers its electron not to an electron carrier but to a ----------. Fill in the blank according to causes of proton gradient in photosynthesis.
a. Primary, proton, outer, proton carrier
b. Primary, electron, outer, proton carrier
c. Terminal, proton, outer, proton carrier
d. Primary, electron, inner, Hydrogen carrier

Subtopic:  Light Reactions :3 | Light Reactions |
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Where does exactly the NADP reductase enzyme located?
a. Thylakoid lumen
b. Thylakoid luminal side of membrane
c. Stromal side of thylakoid membrane
d. Cytoplasm

Subtopic:  Light Reactions :3 | Light Reactions |
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The protons for the reduction of NADP+ are taken from-
a. Stroma
b. Lumen of Thylakoid
c. Cytoplasm
d. Matrix

Subtopic:  Light Reactions :3 | Light Reactions |
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In photosynthesis, what is reduced?
a. NAD
b. NADP
c. NADP+
d. NADH

Subtopic:  Light Reactions :3 | Light Reactions |
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